Results 91 to 100 of about 1,027,913 (293)

The (Glg)ABCs of cyanobacteria: modelling of glycogen synthesis and functional divergence of glycogen synthases in Synechocystis sp. PCC 6803

open access: yesFEBS Letters, EarlyView.
We reconstituted Synechocystis glycogen synthesis in vitro from purified enzymes and showed that two GlgA isoenzymes produce glycogen with different architectures: GlgA1 yields denser, highly branched glycogen, whereas GlgA2 synthesizes longer, less‐branched chains.
Kenric Lee   +3 more
wiley   +1 more source

Problem and Analysis of Phase Wind-Up of Satellite Navigation Antennas for Rotating Carriers [PDF]

open access: yesHangkong bingqi
This paper analyzes the characteristics of satellite navigation signals received by the high-speed rotating carrier in order to solve the problems existing in the application of satellite navigation receiver in the high-speed rotating carrier, studies ...
Wang Jun, Qu Chenxu, Dong Xianzhe
doaj   +1 more source

Phase-locked-loop phase modulator with high modulation index, low distortion [PDF]

open access: yes, 1969
Phase-locked-loop phase modulator has the capability of generating a 6.8MHz carrier at modulation indexes as high as 2.5, with a distortion of the demodulated signal of less than 5 percent.
Badstiibner, C. G.
core   +1 more source

Geometrical phase effects on the Wigner distribution of Bloch electrons

open access: yes, 2006
We investigate the dynamics of Bloch electrons using a density operator method and connect this approach with previous theories based on wave packets.
A. G. Aronov   +14 more
core   +1 more source

Reliable Carrier Phase Positioning [PDF]

open access: yes, 2010
This work provides new algorithms for carrier phase positioning with Global Navigation Satellite Systems such as Galileo or GPS. The carrier phase can be tracked with millimeter accuracy but it is periodic. The reliability of the resolution of these carrier phase integer ambiguities is substantially improved by new multi-frequency mixed code carrier ...
openaire  

Structural biology of ferritin nanocages

open access: yesFEBS Letters, EarlyView.
Ferritin is a conserved iron‐storage protein that sequesters iron as a ferric mineral core within a nanocage, protecting cells from oxidative damage and maintaining iron homeostasis. This review discusses ferritin biology, structure, and function, and highlights recent cryo‐EM studies revealing mechanisms of ferritinophagy, cellular iron uptake, and ...
Eloise Mastrangelo, Flavio Di Pisa
wiley   +1 more source

Organ‐specific redox imbalances in spinal muscular atrophy mice are partially rescued by SMN antisense oligonucleotides

open access: yesFEBS Letters, EarlyView.
We identified a systemic, progressive loss of protein S‐glutathionylation—detected by nonreducing western blotting—alongside dysregulation of glutathione‐cycle enzymes in both neuronal and peripheral tissues of Taiwanese SMA mice. These alterations were partially rescued by SMN antisense oligonucleotide therapy, revealing persistent redox imbalance as ...
Sofia Vrettou, Brunhilde Wirth
wiley   +1 more source

Improvement of Carrier Phase Tracking Based on a Joint Vector Architecture

open access: yesInternational Journal of Aerospace Engineering, 2017
Carrier phase measurements are essential to high precision positioning. Usually, the carrier phase measurements are generated from the phase lock loop in a conventional Global Navigation Satellite System (GNSS) receiver.
Shaohua Chen, Yang Gao
doaj   +1 more source

Phase Extraction Algorithm Based on the Spatial Carrier-Frequency Phase-Shifting Gradient

open access: yesIEEE Photonics Journal, 2019
For improving the accuracy and processing speed of phase extraction, a new phase extraction algorithm based on the spatial carrier-frequency phase-shifting gradient (SCFPS-G) is proposed.
Haoren Zou   +6 more
doaj   +1 more source

Mass-Market Receiver for Static Positioning: Tests and Statistical Analyses [PDF]

open access: yes, 2011
Nowadays, there are several low cost GPS receivers able to provide both pseudorange and carrier phase measurements in the L1band, that allow to have good realtime performances in outdoor condition.
Cina, Alberto, Marucco, G., Piras, Marco
core  

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